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Metallic Gaskets

William Johnston & Company Limited offer Metallic Ring Type Joint gaskets (RTJs) which are manufactured according to the API 6A and ASME B 16.20 standard for applications at elevated temperatures and pressures.

The small sealing area with high contact pressure results in an excellent seal with high integrity.

Shape and Construction

STANDARD MATERIALS - STANDARD MATERIALS RECOMMENDED BY THE ASME B16.20
ASTM EN Material No Maximum HB Maximum HV Material code
Soft Iron 1.1003 90 56 D
Low CS 1.0038 120 68 S
A182-F5 1.7362 130 72 F5
AISI410 1.4000 170 86 S410
AISI 304 1.4301 160 83 S304
AISI316 1.4401 160 83 S316
AISI 347 1.4550 160 83 S347
DIMENSIONS - STANDARDS FOR RING JOINT GASKETS USED WITH FLANGES
Ring Joints Gaskets Style Ring Joints Gaskets Standard Flange Standard
R ASME B 16.20 API 6A ASME B 16.5 ASMEB 16.47
RX ASME B 16.20 API 6A API 6B
BX API 6A API 6BX

Metallic Gasket

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Contact William Johnston & Company Limited

For more information about our Metallic Gaskets that are available world wide, contact us on +44 (0)141 620 1666, Email us or simply complete our online Enquiry Form.


Disclaimer
Please note, failure to select the correct materials or products we supply (“the Products”) may result in damage to plant, equipment or property. In some instances, it may cause death or personal injury. We are not designers and do not give advice about design related matters concerning the Products. We can help and assist with the technical specifications for the Products. In specific applications, particularly where critical conditions exist, we will try to assist you within the limitations of the services that we offer. All information supplied by us is intended as technical co-operation outlining the specifications of the different Products which we supply. To the extent permitted in law, no warranty is given in respect of any information supplied by us. The customer must satisfy themselves as to the suitability of the Products for their intended application and use. The correct fitting of Products is the responsibility of the customer. Your statutory rights remain unaffected. Save in respect of death, personal injury or fraud, our entire liability to you, however arising from the supply of Products shall be limited to the £10M indemnity amount provided by our insurers.

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